Update CHANGELOG.md
Update CHANGELOG.md
Update CHANGELOG.md
Merge branch 'master' of github.com:HubSpot/messenger

Conflicts:
	CHANGELOG.md
Rebuild
Merge branch 'master' into gh-pages

Conflicts:
	build/js/messenger.min.js
Update README.md
Update README.md
Add a link to the rails gem
Updating messenger_preview.png
Update README to use repo preview image @zackbloom
Prefix first, last and shown css classes
Add bower.json
Fixes for bower.json

- Fix jquery dependency
- Include all production files in `main`
- Ignore everything else
Merge pull request #40 from pdf/bower_fixes

Fixes for bower.json
Fix error with underscore when messenger is used without shims
Merge branch 'master' of github.com:HubSpot/messenger
Update to 1.3.1
Merge branch 'gh-pages' of github.com:HubSpot/messenger into gh-pages
Add the ability to return full message option objects from handlers.